(b).

References	Radiation	Magnetic flux density	Exposure time	Model	Temperature	Effect
[159]	ELF-MF 50 Hz	1 mT	Short-term exposure	Boar	—	Lower mitochondrial activity
[160]	ELF-MF 50 Hz	8 mT	Long-term exposure	Rat	—	Mitochondrial damage
[161]	ELF-MF 50 Hz	5 mT	Short-term exposure	Human spermatozoa	Constant	Increased mitochondrial metabolism efficiency
[149]	ELF-MF 50 Hz	100 μT	Long-term exposure	Rat	Constant	Decreased antioxidant defences Decreased sperm motility
[103]	ELF-MF 60 Hz	1 mT	Long-term exposure	Rat	—	Mitochondrial damage
[150]	ELF-MF 50 Hz	100–500 μT	Long-term exposure	Rat	Constant	No on effect rat sperm count No effect on oxidative stress Increased caspase 3 activity
[109]	ELF-MF 50 Hz	500 μT	Long-term exposure	Rat	—	No effect on oxidative stress
[147]	ELF-MF 120 Hz	2.5–8 mT	Short-term exposure	Mouse germ cells	—	Decreased viability Increased ROS production Increased apoptosis
[148]	ELF-MF 50 Hz	2.5 mT	Short-term exposure	Mouse germ cells	—	No effect on mitochondria Increased ROS production Decreased bcl-2 protein level